问题
How can I select and don't show duplicates? Actually, it's showing like that: apple | apple | apples | apple
This is my code:
$search = $_GET['q'];
$query = "SELECT * FROM query WHERE searchquery LIKE '%$search%' AND searchquery <> '$search'";
回答1:
You already said the magic word: DISTINCT.
SELECT DISTINCT columnname
FROM query
WHERE ....
Note that it probably won't work if you use SELECT DISTINCT *
because when you select *
that means select all columns, including columns which have a unique constraint such as the primary key. Only select the columns you need - stay away from *
in general, and especially so when using DISTINCT
.
来源:https://stackoverflow.com/questions/2581718/mysql-select-method-but-dont-show-duplicates-group-or-distinct